Lenovo ThinkServer RD210 Hardware Maintenance Manual - Page 94

7. If you are instructed to return the DIMM, follow all packaging instructions, and use any packaging materials for shipping that are supplied to you. Installing a memory module (DIMMs) The following notes describe the types of DIMMs that the server supports and other information that you must consider when you install DIMMs : • The server supports only industry-standard double-data-rate 3 (DDR3), 800, 1066, or 1333 MHz, PC3-10600R-999 (single-rank or dual-rank), registered, synchronous dynamic random-access memory (SDRAM) dual inline memory modules (DIMMs) with error correcting code (ECC). - The specifications of a DDR3 DIMM are on a label on the DIMM, in the following format. gggeRxff-PC3-wwwwwm-aa-bb-cc where: - ggg is the total capacity of the DIMM (for example, 1GB, 2GB, or 4GB) - e is the number of ranks 1 = single-rank 2 = dual-rank 4 = quad-rank - ff is the device organization (bit width) 4 = x4 organization (4 DQ lines per SDRAM) 8 = x8 organization 16 = x16 organization - wwwww is the DIMM bandwidth, in MBps 6400 = 6.40 GBps (PC3-800 SDRAMs, 8-byte primary data bus) 8500 = 8.53 GBps (PC3-1066 SDRAMs, 8-byte primary data bus) 10600 = 10.66 GBps (PC3-1333 SDRAMs, 8-byte primary data bus) 12800 = 12.80 GBps PC3-1600 SDRAMs, 8-byte primary data bus) - m is the DIMM type E = Unbuffered DIMM (UDIMM) with ECC (x72-bit module data bus) R = Registered DIMM (RDIMM) 86 ThinkServer RD210 Hardware Maintenance Manual